Android如何在屏幕上显示通知？内容来源于 Stack Overflow，并遵循CC BY-SA 3.0许可协议进行翻译与使用
内容来源于 Stack Overflow，并遵循CC BY-SA 3.0许可协议进行翻译与使用
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我一直在处理推送通知，并且能够实现它并将其显示在状态栏上，但我面对的问题是，即使手机处于锁定状态，我也想要显示它，在锁定屏幕上显示，我看到类似的通知，但无法找到任何示例。
例如： 就像你收到未接电话时一样，它会在屏幕上的锁定按钮下显示：
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);
int icon = R.drawable.icon_launcher;
CharSequence tickerText = "MyApplication";
long when = System.currentTimeMillis();
Notification notification = new Notification(icon, tickerText, when);
notification.defaults |= Notification.DEFAULT_SOUND|Notification.DEFAULT_VIBRATE|Notification.DEFAULT_LIGHTS;;
CharSequence contentTitle = this.title;
CharSequence contentText = this.message;
Intent notificationIntent = new Intent(this, MainActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
mNotificationManager.notify(NOTICE_ID, notification);
使用NotificationCompat.Builder创建通知 ：
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_launcher) // notification icon
.setContentTitle("Notification!") // title for notification
.setContentText("Hello word") // message for notification
.setAutoCancel(true); // clear notification after click
Intent intent = new Intent(this, MainActivity.class);
PendingIntent pi = PendingIntent.getActivity(this,0,intent,Intent.FLAG_ACTIVITY_NEW_TASK);
mBuilder.setContentIntent(pi);
NotificationManager mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(0, mBuilder.build());
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